AIChE Journal

Publisher: American Institute of Chemical Engineers, Wiley

Journal description

The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering.

Current impact factor: 2.75

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 2.748
2013 Impact Factor 2.581
2012 Impact Factor 2.493
2011 Impact Factor 2.261
2010 Impact Factor 2.03
2009 Impact Factor 1.955
2008 Impact Factor 1.883
2007 Impact Factor 1.607
2006 Impact Factor 2.153
2005 Impact Factor 2.036
2004 Impact Factor 1.761
2003 Impact Factor 1.667
2002 Impact Factor 1.626
2001 Impact Factor 1.793
2000 Impact Factor 1.645
1999 Impact Factor 1.537
1998 Impact Factor 1.42
1997 Impact Factor 1.338
1996 Impact Factor 1.736
1995 Impact Factor 1.431
1994 Impact Factor 1.359
1993 Impact Factor 1.332
1992 Impact Factor 1.188

Impact factor over time

Impact factor
Year

Additional details

5-year impact 2.69
Cited half-life >10.0
Immediacy index 0.66
Eigenfactor 0.02
Article influence 0.75
Website AIChE Journal website
Other titles AIChE journal (Online), AIChE journal, American Institute of Chemical Engineers journal
ISSN 1547-5905
OCLC 43667889
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Wiley

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author cannot archive a post-print version
  • Restrictions
    • 12 months embargo
  • Conditions
    • Some journals have separate policies, please check with each journal directly
    • On author's personal website, institutional repositories, arXiv, AgEcon, PhilPapers, PubMed Central, RePEc or Social Science Research Network
    • Author's pre-print may not be updated with Publisher's Version/PDF
    • Author's pre-print must acknowledge acceptance for publication
    • Non-Commercial
    • Publisher's version/PDF cannot be used
    • Publisher source must be acknowledged with citation
    • Must link to publisher version with set statement (see policy)
    • If OnlineOpen is available, BBSRC, EPSRC, MRC, NERC and STFC authors, may self-archive after 12 months
    • If OnlineOpen is available, AHRC and ESRC authors, may self-archive after 24 months
    • Publisher last contacted on 07/08/2014
    • This policy is an exception to the default policies of 'Wiley'
  • Classification
    yellow

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: This paper presents a targeting and design methodology that can be implemented for any process where pressure-based exergy, also known as mechanical exergy, has an important contribution to the total exergy conversion and transfer. However, in this paper it is applied to processes that operate at sub-ambient conditions, or processes where the ambient conditions are crossed. Exergy efficiencies, new Exergetic Composite Curves, Cascades, and Extended Grid Diagrams are tools that had to be implemented, improved or invented, in order to develop a methodology with considerable potential for energy-efficient process design. The appropriate placement (correct integration) of compressors and expanders in heat exchanger networks is also analyzed to minimize the number of units. An example is used to demonstrate the methodology, where several simplifying assumptions are made to facilitate understanding and to explain the design method. This article is protected by copyright. All rights reserved.
    No preview · Article · Mar 2016 · AIChE Journal

  • No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: The initial fluidization characteristics of gas-liquid-solid mini-fluidized beds (MFBs) were experimentally investigated based on the analyses of bed pressure drop and visual observations. The results show that ULmf in 3-5 mm MFBs can't be determined due to the extensive pressure drop fluctuations resulting from complex bubble behavior. For 8-10 mm MFBs, ULmf was confirmed from both datum analyses of pressure drop and Hurst exponent at low superficial gas velocity. But at high superficial gas velocity, ULmf was not obtained because the turning point at which the flow regime changes from the packed bed to the fluidized bed disappears, and the bed is in a half fluidization state. Complex bubble growth behavior resulting from the effect of properties of gas-liquid mixture and bed walls plays an important role in the fluidization of solid particles and leads to the reduction of ULmf. An empirical correlation was suggested to predict ULmf in MFBs. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: The planar membrane reactor configuration was explored for partial oxidation of methane to syngas. A supported membrane composed of yttria-stabilized zirconia and La0.8Sr0.2Cr0.5Fe0.5O3-δ was sealed to a stainless holder, and a Ni/Al2O3 catalyst bed was placed under the membrane plane with a small slit between them. This reactor configuration would facilitate the POM reaction via oxidation-reforming mechanism: the oxidation reaction occurring at the membrane surface and the reforming reaction taking place in the catalyst bed. At 800°C and a methane feed rate of 32 ml min−1, the reactor attained methane throughput conversion over 90%, CO and H2 selectivity both over 95%,and an equivalent oxygen permeation rate 1.4 ml cm−2min−1.The membrane and catalyst remained intact after the POM testing. The planar membrane reactor configuration explored in the present study may lead to the development of a compact reactor for syngas production. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: This paper presents experimental results of an autothermal scaled-down system for H2 production. Pure atmospheric pressure H2, separated in situ by Pd-Ag membranes, is produced by steam reforming (SR) of methane, ethanol or glycerol. Oxidizing the SR effluents in a separate compartment supplies the heat. The oxidation feed is axially distributed to avoid hotspots. The 1.3L system, comprises 100cm2 of membrane area, and generates H2 flow rate equivalent to 0.15kW at an efficiency of ∼25%. This process leads to comparable performance when different fuels are used. A mathematical model, validated by the measurements, predicts that increasing the membrane area relative to the outer surface area will substantially increase the efficiency and power output. This design serves as proof of concept for on-board pure H2 generators, with flexible fuel sources, and holds a great promise to reduce the need for special H2 transport and storage technologies for portable or stationary applications. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: A dehydration of fructose in the water/methyl isobuthyl ketone (MIBK) biphasic system can yield 5-hydroxymethylfurfural (HMF) to be successfully extracted into the organic MIBK phase. The HMF production and yield in MIBK phase was discussed by using a simplified model taking into consideration of the slug flow. The extraction resistance of HMF across the interface between water and MIBK depended on the line velocity and the flow rate ratio. It was likely that the velocity field generated in the slug flow contributed to an increase in the mass transfer of HMF. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: The kinetics of ab initio reversible addition-fragmentation chain transfer (RAFT) emulsion polymerization of styrene using oligo(acrylic acid-b-styrene) trithiocarbonate as both polymerization mediator and surfactant were systematically investigated. The initiator concentration was set much lower than that in the conventional emulsion polymerization to significantly suppress the irreversible termination reaction. It was found that decreased rapidly but the nucleation efficiency of micelles increased with the decrease of the initiator concentrations due to the significant radical exit. The particle number (NP) did not follow the classic Smith-Eward equation but was proportional to [I]−0.4[S]0.7. It was suggested that RAFT emulsion polymerization could be fast enough for commercial use even at extremely low initiator concentrations and low macro-RAFT agent concentrations due to the higher particle nucleation efficiency at lower initiator concentration. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: As liquid bridge between particles acts an important role in the particle system, it is of considerable significance to analyze the flow hydrodynamics of wet particles in fluidized beds, which will improve the reactor design and process optimization. Thus, experimental and numerical investigations on wet particles in a bubbling fluidized bed are conducted in current work. On experimental side, particle image velocimetry (PIV) technology is employed with a designed bubbling fluidized bed. The silicone oil is used in this work because it is non-volatile and transparent. On numerical side, a modified DEM numerical method is developed by compositing an additional liquid-bridge module into the traditional soft-sphere interaction model. Most of the physical parameters are chosen to correspond to the experimental settings. Good agreements of particle velocity are found between the DEM simulation and PIV measurement. The performance of different liquid contents and superficial gas velocities are examined. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal

  • No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: The low rank coals from Victoria, Australia and Rhineland, Germany are of interest for use in entrained flow gasification applications. Therefore, a high temperature, electrically heated, entrained flow apparatus has been designed to address the shortage of fundamental data. A Victorian brown coal and a Rhenish lignite were subjected to rapid, entrained flow pyrolysis between 1100 and 1400°C to generate high surface area chars, which were subsequently gasified at the same temperatures under CO2 in N2 between 10 and 80 vol.%. The Victorian coal was more reactive than the Rhenish coal, and peak char reactivity was observed at 1200°C. Char conversion and syngas yield increased with increasing temperature and plateaued at high CO2 concentration. Ammonia and tar species were negligible and HCN and H2S were present in ppmv concentrations in the cooled, filtered syngas. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: Liquid in a Petri dish spontaneously circulates in a radial pattern, even when the dish is at rest. These fluid flows have been observed and utilized for biological research, but their origins have not been well-studied. Here we used particle-tracking to measure velocities of radial fluid flows, which are shown to be linked to evaporation. Infrared thermal imaging was used to identify thermal gradients at the air-liquid interface and at the bottom of the dish. Two-color ratiometric fluorescence confocal imaging was used to measure thermal gradients in the vertical direction within the fluid. A finite-element model of the fluid, incorporating the measured temperature profiles, shows that buoyancy forces are sufficient to produce flows consistent with the measured particle velocity results. Such flows may arise in other dish or plate formats, and may impact biological research in positive or negative ways. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: We report direct numerical simulation results for gas flow through dynamic suspensions of spherical particles. The simulations are performed using an immersed boundary method (IBM), with careful correction for the grid resolution effect. The flow systems we have studied vary with mean flow Reynolds number, solids volume fraction, as well as particle/gas density ratio. On the basis of the simulation results, the effect of particle mobility on the gas-solid drag force is analyzed and introduced into the existing drag correlation that was derived from simulations of stationary particles. This mobility effect is characterized by the granular temperature, which is a result of the particle velocity fluctuation. The modified drag correlation is considered so-far the most accurate expression for the interphase momentum exchange in computational fluid dynamics models, in which the gas-solid interactions are not directly resolved. This article is protected by copyright. All rights reserved.
    No preview · Article · Feb 2016 · AIChE Journal
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    ABSTRACT: Recent government mandates have lowered the permissible global warming potential (GWP) for refrigerants in mobile air conditioning substantially below that of the hydrofluorocarbon (HFC) products that are used currently. Potential replacements, hydrofluoro-olefins (HFO), have a reduced impact on the ozone layer and lower GWP. Many desirable HFO compounds, such as HFO-1234yf, can be produced utilizing chlorocarbons as feedstocks such as the preferred 1,1,2,3-tetrachloropropene (TCPE). TCPE can be produced by several routes; however, producing TCPE from 1,2-dichloropropane (PDC) is potentially more desirable environmentally and economically since PDC is a byproduct of propylene oxide (PO) and allyl chloride production. One process option is to convert PDC to pentachloropropane (PCP) intermediates by chlorination, followed by dehydrochlorination of the PCPs to produce TCPE. In this work, we show that PCPs can be produced through the chlorination of PDC in a free-radical liquid phase reaction and have developed a kinetic model for PDC chlorination based on the relevant free radical elementary reactions. Thermodynamic properties including standard heats of formation, standard entropies of formation and heat capacities for the radical and non-radical species were estimated by using ab initio and COSMOtherm calculations and validated against available experimental data. The reaction equilibrium constants were determined from the Gibb's free energies of the reactants and products. Phase equilibria were calculated by means of a consistent set of thermodynamic properties of the species. In addition, physical properties such as the vapor pressure of pure components involved in the reaction network were also estimated. Ab initio transition state calculations were employed to estimate the rate parameters including pre-exponential factors and activation energies for the relevant reactions. The activation energies of some key reactions were then adjusted to match experimental data. The resulting kinetic model provided a basis for process yield optimization and scale up. This article is protected by copyright. All rights reserved.
    No preview · Article · Jan 2016 · AIChE Journal
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    ABSTRACT: In this work we present a novel, data-driven, quality modeling and control approach for batch processes. Specifically, we adapt subspace identification methods for use with batch data to identify a state-space model from available process measurements and input moves. We demonstrate that the resulting LTI, dynamic, state-space model is able to describe the transient behavior of finite duration batch processes. Next, we relate the terminal quality to the terminal value of the identified states. Finally, we apply the resulting model in a shrinking-horizon, model predictive control scheme to directly control terminal product quality. The theoretical properties of the proposed approach are studied and compared to state-of-the-art latent variable control approaches. The efficacy of the proposed approach is demonstrated through a simulation study of a batch polymethyl methacrylate (PMMA) polymerization reactor. Results for both disturbance rejection and set-point changes (that is, new quality grades) are demonstrated. This article is protected by copyright. All rights reserved.
    No preview · Article · Jan 2016 · AIChE Journal
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    ABSTRACT: The effects of varying the elastic modulus, coefficient of restitution, and coefficient of friction of adhesive particles on fluidized bed dynamics have been investigated via numerical simulations. It is found that lower values of the elastic modulus and coefficient of restitution lead to a greater degree of particle clustering, and the formation of smaller bubbles. Coordination numbers are found to initially increase, and then fall, with increasing coefficient of friction, while bubble velocities follow the opposite trend. It is concluded that artificially reducing the elastic modulus of adhesive particles has a significant impact on the fluidization behaviour. The change in dynamics of the fluidized bed due to varying the coefficient of friction is more complex: particle clustering increases up to a point, beyond which clusters become increasingly rigid. This article is protected by copyright. All rights reserved.
    No preview · Article · Jan 2016 · AIChE Journal
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    ABSTRACT: Empirical relationships between effective conductivities in porous and composite materials and their geometric characteristics such as volume fraction ε, tortuosity τ and constrictivity β are established. For this purpose, 43 virtually generated 3D microstructures with varying geometric characteristics are considered. Effective conductivities σeff are determined by numerical transport simulations. Using error-minimization the following relationships have been established: and (simplified formula) with intrinsic conductivity σ0, geodesic tortuosity τgeod and relative prediction errors of 19% and 18%, respectively. We critically analyze the methodologies used to determine tortuosity and constrictivity. Comparing geometric tortuosity and geodesic tortuosity, our results indicate that geometric tortuosity has a tendency to overestimate the windedness of transport paths. Analyzing various definitions of constrictivity, we find that the established definition describes the effect of bottlenecks well. In summary, the established relationships are important for a purposeful optimization of materials with specific transport properties, such as porous electrodes in fuel cells and batteries. This article is protected by copyright. All rights reserved.
    No preview · Article · Jan 2016 · AIChE Journal
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    ABSTRACT: Particle-resolved direct numerical simulations (PR-DNS) of a simplified experimental shallow fluidized bed and a laboratory bubbling fluidized bed are performed by using immersed boundary method coupled with a soft-sphere model. Detailed information on gas flow and individual particles' motion are obtained and analyzed to study the gas-solid dynamics. For the shallow bed, the successful predictions of particle coherent oscillation and bed expansion and contraction indicate all scales of motion in the flow are well captured by the PD-DNS. For the bubbling bed, the PR-DNS predicted time averaged particle velocities show a better agreement with experimental measurements than those of the computational fluid dynamics coupled with discrete element models (CFD-DEM), which further validates the predictive capability of the developed PR-DNS. Analysis of the PR-DNS drag force shows that the prevailing CFD-DEM drag correlations underestimate the particle drag force in fluidized beds. The particle mobility effect on drag correlation needs further investigation. This article is protected by copyright. All rights reserved.
    No preview · Article · Jan 2016 · AIChE Journal
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    ABSTRACT: Variations in parameters such as processing times, yields, and availability of materials and utilities can have a detrimental effect in the optimality and/or feasibility of an otherwise “optimal” production schedule. In this paper, we propose a multi-stage adjustable robust optimization approach to alleviate the risk from such operational uncertainties during scheduling decisions. We derive a novel robust counterpart of a deterministic scheduling model, and we show how to obey the observability and non-anticipativity restrictions that are necessary for the resulting solution policy to be implementable in practice. We also develop decision-dependent uncertainty sets in order to model the endogenous uncertainty that is inherently present in process scheduling applications. A computational study reveals that, given a chosen level of robustness, adjusting decisions to past parameter realizations leads to significant improvements, both in terms of worst-case objective as well as objective in expectation, compared to the traditional robust scheduling approaches. This article is protected by copyright. All rights reserved.
    No preview · Article · Jan 2016 · AIChE Journal
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    ABSTRACT: The first synergistic extraction between quaternary phosphonium type ionic liquid extractants in toluene for rare earth was reported in this article. There were two different ion-association mechanisms in the synergistic extraction system. The formed reversed micelles contributed to increase extractability of the synergistic extraction system to a considerable extent. On the one hand, million tons of saponification wastewater from acidic extractants may be avoided by developing the extraction system using bifunctional ionic liquid extractants. On the other hand, the novel synergistic extraction offers an effective strategy to increase the extractabilities of industrial extractants. This paper reveals sustainable and efficient potentials for industrial rare earth separation. This article is protected by copyright. All rights reserved.
    No preview · Article · Jan 2016 · AIChE Journal